Global Star Solution — fraud company blackmailing

I got call from a person saying that i have to fill 1000 forms in 10 days and i will be paid 14800/-. If the task is not completed they told me i have to pay them 5200/-. After that i asked them their company details and related website. They didn't answer the mail. The phone numbers and mail id's which they have given are all fake. After 1 day of the work they assigned i got to know that this is a fraud company. Then i mailed them i am not going to work as you are a fraud company. After 10 days i am getting mails from them saying that i need to pay them money otherwise they are going to file a case against me in the court. The advocate name is m. Patel his phone number is [protected]. He is sending me this notice of paying them money otherwise he will file the case in the court. He is also calling me and scolding, threating me for me to pay the money. His advocate enrollment number is 2203/2016. Please help me resolve this issue.